64 



THE MONTANA EXPERIMENT STATION. 



129. VERBASCUn THAPSUS, L. Mullein. 



A thick, woolly-leaved biennial with a tall (two to six feet) 

 unbranched stem and a terminal spike of 3'ellow flowers. An in- 

 troduced plant well established in many places about the state in 

 fields and waste places and by roadsides. Most troublesome from 

 Missoula south and west along the railroads. Common in the 

 Flathead valley near Columbia Falls, along the Missouri below 

 Craig and occasional in the Gallatin valley near Bozeman. Seems 

 well adapted to our climatic conditions and is liable to become a 



serious oest. 



130. VERBENA BRACTEOSA, 



Michx. Trailing Vervain; Vervain. 



A perennial, native in the region 

 east of the mountains. It forms 

 broad mats along roadsides, in 

 yards and waste places. A pros- 

 trate and bristly hairy plant with 

 small blue flowers along the ends 

 of the branches. 



131. VERONICA PEREGRINA, L. 

 A small annual not infrequent 



here as a weed in grain fields and 

 cultivated ground, but hardly 

 troublesome. 



132. "VERONICA BVZANTINA, 

 B. S. P. 



A small weed occasionally intro- 

 duced in garden seed, but has not 

 3'et become well established. Noted 

 at Bozeman. 



133. XANTHIFM CANADEXSE, 



Mill. GOCKXEBUR. 



A coarse annual with heart- 

 shaped leaves and clusters of burs 



21. Xanthium Canadense, Mill, 

 Branch V3; bur natural size. 



in their axils. Locally established 



along 



ditches and in low 



